Stehekin Power System

Stehekin has 3 sources of power:

  1. Primary Hydro: The main source of power to the Stehekin Valley

  2. Secondary Diesel (D2): Turned on when the community needs more power than hydro can create alone

  3. Emergency Back-Up (D1 and D4): Two diesel generators are allowed to run during an emergency or maintenance

Ideally, the hydro would supply most or all of the needed power for Stehekin. Sometimes, D2 also must be turned on to meet power needs, such as during cold winter days when homes use electric space heaters.

What is the problem? When the community needs more power than the hydro and D2 can create together, power outages occur.

Graphic of power generation system in Stehekin
Constraints in Stehekin